HTTP Headers Analysis for https://www.runners.nl

Detected Technologies from Headers

See all in URL Inspect 1

Next.js

HTTP Security Headers

Status

Strict-Transport-Security

Missing

Not configured

Content-Security-Policy

Missing

Not configured Analyze

Content-Security-Policy-Report-Only

Missing

Not configured Analyze

X-Frame-Options

Missing

Not configured

X-Content-Type-Options

Missing

Not configured

Referrer-Policy

Missing

Not configured

Permissions-Policy

Missing

Not configured

Recommendations

• Add Strict-Transport-Security header with max-age of at least 1 year
• Add Content-Security-Policy header to prevent XSS attacks
• Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
• Add X-Content-Type-Options: nosniff
• Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
• Consider adding Permissions-Policy to control browser features

Performance Headers

Connection

Performance

close

Transfer-Encoding

Performance

chunked

Vary

Performance

rsc, next-router-state-tree, next-router-prefetch, next-router-segment-prefetch, Accept-Encoding

connection: close
transfer-encoding: chunked
vary: rsc, next-router-state-tree, next-router-prefetch, next-router-segment-prefetch, Accept-Encoding

Caching Headers

Cache-Control

Caching

private, no-cache, no-store, max-age=0, must-revalidate

cache-control: private, no-cache, no-store, max-age=0, must-revalidate

Content Headers

Content-Type

Content

text/html; charset=utf-8

content-type: text/html; charset=utf-8

Server Headers

X-Powered-By

Server

Next.js

x-powered-by: Next.js

CORS Headers

No CORS headers found

Cookies Headers

Set-Cookie

Cookies

set-cookie: experimentGroup=b; Path=/; Expires=Wed, 14 Apr 2027 00:48:31 GMT

Other Headers

Alt-Svc

Other

h3=":443"; ma=2592000

Date

Other

Tue, 14 Apr 2026 00:48:31 GMT

Link

Other

URL https://next.cdn.pxr.nl/_next/static/css/12d5671f0b9526b6.css

rel=preload as=style crossorigin=anonymous

URL https://next.cdn.pxr.nl/_next/static/css/206ef537e617c70f.css

rel=preload as=style crossorigin=anonymous

Via

Other

1.1 google

X-Middleware-Rewrite

Other

/h~www.runners.nl*l~nl_NL*p~rw*c~800*e~b

alt-svc: h3=":443"; ma=2592000
date: Tue, 14 Apr 2026 00:48:31 GMT
link: <https://next.cdn.pxr.nl/_next/static/css/12d5671f0b9526b6.css>; rel=preload; as="style"; crossorigin="anonymous", <https://next.cdn.pxr.nl/_next/static/css/206ef537e617c70f.css>; rel=preload; as="style"; crossorigin="anonymous"
via: 1.1 google
x-middleware-rewrite: /h~www.runners.nl*l~nl_NL*p~rw*c~800*e~b

Recommendations

Enable compression (gzip/brotli) to improve performance

Consider removing X-Powered-By header to hide server technology